We're in the same situation... We began developing a project on the KwikStik40 about a year ago, but higher priorities came up (development using high-end ARM CPUs from TI) and had to shelve the project for a little while. My engineers have just wasted several days of their time trying to install the CodeWarrior 10.5 on Linux, including moving components into the "new" Eclipse IDE (Kepler) so we could use it in Linux. We tried reinstalling our old Linux version of CW 10.2 on a new dev computer, but it says the license has expired. What a waste of our resources!
I'm really surprised a company in such a competitive market is shedding their hosting support for Linux. But then, as mentioned earlier in this thread, a company that was really "with-it" would have developed their Eclipse-based IDE as Eclipse packages so we (& they) would have an easy migration path to newer Eclipse platforms.
We won't change our world (exclusively Linux-based) to accommodate the whims of this company. We're actively looking into development boards from other companies (so far, we really like the NXP dual-core M4/M0 boards), so we don't expect to be using Freescale for any future projects. Too bad, I really liked some of the Kinetis features when we researched them last year.