Images courtesy of Jamie Davis via Facebook.
X-Plus - Nothing new Kaiju related was shown at X-Plus' table except for the event exclusive reissue of the Toho Large Monsters Series Megalon and Gigan 1972 set along with the TLMS Godzilla 1973 and Jet Jaguar... Perhaps implying a future RIC Boy reissue?
Also from X-Plus, via Yuji Sakai, we are also getting a new addition to the Gigantic Series line in the form of the Yuji Sakai Modeling Collection Godzilla 1954. It's been claimed that this figure will be around 18 inches tall. Be sure to look out for it later this year! I know I will be.
Update: The Gigantic Series Yuji Sakai Modeling Collection Godzilla 1954 is slated for an early summer 2016 release.
Kaiyodo - Aside from the already released Revoltech figures from the Gamera series that Kaiyodo has released years ago, there is also a placard that teases an imminent release of figures from Gamera 3: Revenge of Irys. So a Revoltech Gamera 1999 and Irys may be on the way pretty soon!
Max Factory - A couple years ago, Max Factory teased a plastic model kit for Gipsy Danger as well as an implication of more Jaegers to come. Well, they unveiled their sculpt for Cherno Alpha, which will include light-up features! No word yet regarding the release of their Pacific Rim Jaeger plastic model kits. But the tension builds and even though I am not into building models, these might be an exception!
Bandai Tamashii Nations - Other than the S.H. MonsterArts Godzilla  displayed at Yuji Sakai's table, there is not a lot new shown at Wonderfest. However, the next addition to the Ultra-Act x S.H. Figuarts Manga Ultraman line has been unveiled: Ultraman Suit ver. 7.2. It is slated for August 2016.
We will keep you updated as new information presents itself!