I'm happy to announce the following information that I've gathered from MULTIPLE reliable sources.
Here it goes.
In 2010 the Experience Music Project in Seattle, WA is going to open up a RE DESIGNED DEDICATED NIRVANA EXHIBIT.
On display will be MULTIPLE instruments as well other related items (i.e. clothing, original artwork, etc...) Most of these items are already behind the scenes of the EMP. An official announcement will be made by the EMP later on in 2009.
(kind of) Confirmed guitars to be at the dedicated Nirvana display;
2. Black Stratocaster (dedicated entry coming soon)
Speculated through hear-say guitars to be displayed
1. Smells Like Teen Spirit Fender Mustang (already @ EMP)
3. Smashed Univox Hi Flier (once display @ EMP, possible return ?)
4. Reading Festival 1992 gear (sunburst strat, bass, drums) (already @ EMP)
To quote MTV News from the early 90's, "you heard it here first"
I've been informed that the Nirvana exhibit has been postponed to late 2010/2011
I promised them I wouldn't tell :)