Re: WELL
That's not unique to Panasonic. The Skype for TV app has just been discontinued too - anyone with that app on their TV, no matter what brand, won't be able to use it soon.
This is part of the reason I deliberately avoided "smart" TV's - I don't want to have to update, upgrade, manage and secure yet-another-PC in the house. I bought a 32" dumb Samsung display instead. Into that we plug all our content-producing devices that can be removed or updated individually. But, to be honest, apart from the VM box, we don't really have to ever touch much. When the Wii we had was declared obsolete, we still had YouTube and even Amazon Instant Video apps on the Blu-Ray, or via the Chromecast, or even the cheap satellite box we had.
A TV is a display device. The more junk you expect it to do, the quicker it will obsolete some part of itself. But if you just buy a TV with however-many HDMI ports on the back, you can plug in whatever you like. And then whatever-content doesn't work, the big TV that you are used to the look and operation of, sitting bolted to your wall, doesn't have to move or change at all. You just swap out the box producing the content and use an alternative.
The people I know with Smart TV's all stopped using the apps on them within a year or so. They basically wasted the extra money. Whereas I've gone through two Chromecasts, (mainly because the new one runs on 5GHz and my 5GHz channels are much quieter) and that's it. Everything else is still connected and working for its primary purpose (e.g. Blu-Ray / Satellite / Cable / streaming / whatever) and I haven't lost access to any particular service (not that I'd do YouTube via a STB, but I still can via a myriad of options without having to resort to a laptop).
Dumb TV. Smart content devices. The other way round is just silly.