According to Anime News Network (source), Shirow Miwa has announced that he is planning on resuming DOGS! The article does not give a date or estimate when DOGS will be resuming, but it’s still happening!
Miwa tweeted about ending the RWBY manga (source) and mentioned preparing to resume DOGS again (source). I know very limited Japanese, so if anyone can offer a better translation of Miwa’s tweet, it would be greatly appreciated!
Miwa also tweeted earlier today a video showcasing much of the DOGS artwork he has done in the past for volumes, color inserts, and more. Check out this video here!