I'd wait for 2.10 but there's no telling when a release coming up...
> Date: Tue, 9 Jul 2013 07:53:49 +0400
> From: alexandre.prokoud...@gmail.com
> To: email@example.com
> Subject: Re: [Gimp-user] Viewport rotation
> On Tue, Jul 9, 2013 at 5:39 AM, B. Jack wrote:
> > GIMP 2.9.1 doesn't seem to have the shift+middle drag support just a lot of
> > slowness due to all the debug code being active. Which development version
> > has it?
> There is no officially released 2.9.x version. If you are talking
> about an installer from http://partha.com/, it was last updated way
> before canvas rotation landed.
> Alexandre Prokoudine
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