Apparently, this was announced at ComicCon. Here's the text from his Instagram post:

Bless me Father - for I have cinema! I announced it at my Hall H panel last night so I can say it here today: the good folks at @lionsgatehome will be releasing @dogmaresurrected! Later this year, they’ll be bringing our beautiful 4K transfer to what we used to call “Home Video” back in the day - which today means streaming and whatnot. But one of the things I love about working with @lionsgate (and if you’re old like me, you might recall they released #dogma theatrically back in 1999) is their commitment to PHYSICAL MEDIA! So like they did with @clerksmovie and #the430movie, the #lionsgate kids are already building an amazing STEEL BOOK for Dogma as well! The abundance of extras we’re including will make it a heavenly addition to your collection, thanks to a helluva company that still believes there’s a little life left in the @jayandsilentbob biz! Thanks, LG! #KevinSmith #comiccon #steelbook