From the recent Tekken 7 niconico stream with Harada.
Jin will be unlocked for Arcades everywhere on 3/31 while Devil Jin will be unlocked on 4/7 next month. Josie Rizal doesn't have an announced date yet but Harada hinted at 'Golden Week' during the stream. (April 29 ~ May 6 for those wondering.) Character reveal trailers can be found below.
TEKKEN 7 will be at NorCal Regionals next to the Mad Catz booth. April 3-5! http://t.co/uFfylqQujN— Katsuhiro Harada (@Harada_TEKKEN) March 27, 2015
TEKKEN 7 will be at Northwest Majors 7 next to the Mad Catz booth. April 24-26! http://t.co/86PWKFwHQW— Katsuhiro Harada (@Harada_TEKKEN) March 27, 2015
Thanks @Harada_TEKKEN & team for making TEKKEN 7 at events possible! T7 will be at NCR (April 3 - 5) and NWM7 (April 24 - 26)! See ya there!— Mark Julio (マークマン) (@MarkMan23) March 27, 2015
April is going to be a busy month. There's also Lionz Den 2 happening in London on April 4th.
Tekken 7 recently saw a new online update being applied to all T7 cabinets and Namco have published a notice on the Tekken Official website detailing what it contains. It features several balance changes, moveset alterations, bug fixes and a little more which I have listed below in English. Most of the details on some of the changes were a bit broad so I've also added findings from Yuu into this piece.
UPDATE: Video footage of the Jin Kazama fight has now been added to this post!
Big thanks goes to Masakarijin for the discovery! The conditions to encounter Jin in the Tekken 7 arcade mode are currently unknown but according to Harada, they're really difficult/obscure conditions to satisfy to trigger Jin Kazama as a replacement boss for Stage 4 in the arcade mode. Going by that info, who knows what other character is secretly hiding within the game? More photos of the Jin Kazama encounter below!