You can now filter games by release year, independently from ordering options. This is available in the settings panel of all tools: library, wishlist, friends' libraries and store search.
Store search now gives results also when no filter is specified. This is useful to discover games using only settings and ordering options, for example you could list the best user rated games released in 2017, or search for the newest free games using the "Free" filter together with the release date ordering.
There's a new option on the release date order button which reverses ordering, listing older games first.
In Wishlist filters you can now select your country. Games' prices and discounts will be listed for the selected market/region.
You can now compare more than 4 libraries in Friends filters. When comparing 5+ libraries you lose color-coding, instead a simple people count is shown next to each game: hover the mouse pointer over that number to see who own that game and their playtimes.
In Store filters you can optionally enter your Steam ID/name if you toggle the new checkbox under the search field. Search results will be clearly marked in case you already have that game in your library or in your wishlist.
If you click an already selected filter in the Store filters search field, all games matching that filter will be exluded from search (just like it works for library). For example, you can search the entire store for indie horror games without zombies in it :)
You can now choose which information is shown on the top right corner of games, independently from the selected sorting option. Click the little triangle in the top right corner of any game, and take your pick. This way you can, for example, look at your games' playtime while sorting them by user rating. This works everywhere, in library, wishlist, friends and store.
There's a new sorting option, called Wilson score, that you can enable using the new gear/settings icon in the "User rating" button in the Order by section. This is still based on Steam users' reviews, but it rewards games with lots of positive ratings over games with higher scores but low reviews count. This should help further removing the clutter, and can be used as an alternative to the already available reviews count filter. If you are curious about the math behind that, check out this article: http://www.evanmiller.org/how-not-to-sort-by-average-rating.html
Save the current combination of applied filters/sorting, and check it back later. Just click the new "Save current view" button under the bookmark URL in settings, and a new URL will be generated for you. When you will visit such URL, all filters will be re-applied automatically after your library is loaded. That is available on all tools, meaning you can also save a store search for the most rated multi-player zombie FPSs with controller support and take a look every time you want.
New filter for free/paid games, available in settings of all tools. You can use it in your library to hide "free junk", or in the store search to hunt for free-to-play games!
Ability to hide games with few user reviews, available in settings of all tools. You can choose to show only games with 5, 10, 20, 50, 100 or 500 user reviews, overall or just recent (last 30 days). This can be useful when used with user rating sorting, since less-popular games with just a few positive reviews get a perfect-100% rating and jump in first positions.
User reviews count, both overall and recent, is available now also as a sorting option. You can use it to list most "popular" games on top. Please note that reviews data is updated once or twice a week in my tools.
With the new Store search you can filter over 30 thousands titles by tags and features, finding new games in a couple of seconds.
Friends' IDs/names suggestion in Friends filters: after typing the first one, you can easily pick other profiles by selecting your friends from a dropdown list.
In Friends filters you can now load also games that only one of you own, unchecking the option below the "Load libraries" button. This can be useful if you use Steam family to share games.
Sort by recently played in Library filters: games you played last will be placed on top of the list.
Wishlist filters: like you did with your library, you can now load games from your wishlist too. In addition, you'll be able to sort games by current prince in $ and by current discount. Use it wisely during these Steam sales!
New sorting option, by Steam release date. You can now finally order your library listing most recent games on top!
An option to change the logic used to combine filters from AND to OR. With the new OR option every new filter you click will add more games to the results. You will be able, for example, to pick games with full OR partial controller support, zombies OR horror, and so on.
An option to show games in a cool grid instead of the detailed list you're used to. Wow, what a colourful wall of games you got!
A button to pick a random game from the ones currently matched, if you feel undecided.
VR support filters. If there are VR games in your library, you now have the option to filter them by supported headsets, input type and play area. If you don't have a VR headset yet, maybe it can help you choose if and which one to buy :)