They also have a tendency to shut down former iterations of tamatown after new releases(although I was impressed with how long they supported the connection tamatown). It stinks, but oh well. That said, like iAm noted, there's no news on it(at least not that I've seen) only the Meets app
There is a particular PC program you can download for the On made by Mr. Blinky, so you could craft custom characters to breed with, if you like. I won't say more, but I feel that it's in line with the enwarehouse program and will be very useful to meets/on tama owners many many years after they do decide to discontinue the On app.
That said, I anticipate them keeping it around for a bit longer, specifically because the Pix doesn't have an online component aside from QR codes. They don't have something to replace the On app with except for that tamagotchi forever app.