Gen Con is fast approaching and starting to wonder what new games we may see in the Dealer Room this year?  I personally hoping for The Witcher RPG but don't know if it will be out.

The boardgamegeek web site has a GenCon preview every year, which lists all the new games that will be available.

Right now you can see the Origins preview (which also has a lot of interesting new games), and after Origins is over, the GenCon preview will go up.
 

Here a 'so far' list

https://www.boardgamegeek.com/geeklist/207593/most-anticipated-games-gencon-2016

I maintain a RPG Gen Con release list at RPG Geek:

https://www.rpggeek.com/geeklist/208491/rpg-products-releasing-gen-con-2016-publisher

As far as The Witcher RPG, neither R. Talsorian nor CD Projekt Red is listed as one of the Exhibitors, so I would be surprised to see it at Gen Con this year.  The last development blog post (May) also seemed to indicate that the release isn't imminent.

Here's the boardgamegeek GenCon preview:
https://boardgamegeek.com/geeklist/198728/gen-con-2016-preview

... and here's the RPGgeek GenCon preview:
https://rpggeek.com/geeklist/198728/gen-con-2016-preview

Both of these will grow in the next 6 weeks as more publishers add their titles to the lists.

Silver Tower and Age of Sigmar!!!

Jasco Games might have their new Top Gun card game out.  (They were demoing it at Origins.)

Whoops! I just noticed something -- those two links go to the same list.

I'd have thought the RPGgeek site would have had an rpg-specific list, but I guess not.

If you don't want to sift through all the prototype/demo games on the main BGG list, I create a list of all games debuting for sale filtering all of those out. It is here:
http://www.boardgamegeek.com/geeklist/209188/games-debuting-sale-gen-con-2016

https://www.rpggeek.com/geeklist/208491/rpg-products-releasing-gen-con-2016-publisher

I do not have access to the same tool as the BGG list, so it's a more traditional Geeklist.

Corvus Belli will be introducing a new Battle Pack Operation: Red Veil for the Infinity miniatures game.

As with Operation: Icestorm, this set will contain 14 highly detailed metal miniatures, rules, dice, terrain and markers to get a start with the Infinity Miniatures game.

Additional information can be found here: http://infinitythegame.com/article.php?id=209

Ulysses Spiele's KS for The Dark Eye (English-language edition) recently ended and they've already got PDFs out to backers. Hopefully the hardcovers will be dropping at GenCon!