Samsung seems to be getting the "Nokia disease". Bada 2.0 should be in out in June, but it's still nowhere to be seen except for beta. And now this Tizen. IMO this shows that Samsung is not capable of developing software fast enough to keep up with the market. Samsung is not even developing the core OS for Bada. Tizen is obviously only a playground for Samsung trainees and students. Something good is bound to come out of it, but it may not be what we think it will be, and it will mostly be good for Samsung only.

Bada with Tizen/MeeGo core - yes probably. Bada itself going open source - I don't think so.