I am not 100% sure these features are new to 3.2, but the new manual tempted me to explore and find:
1 Quick check tool - enables slide show type run through CR2s and marker placement; useful when one has a lot of very similar ones to choose the best
2 Blown-highlight and dead-shadow area show-up in red. This is similar to a shifted operation in PS explained in Cambridgeincolour.com. Never wanted to use it myself
3 Really great - squared curves. Sounds daft, but converts curves which 'b-spline' thus causing unwanted effects beyond points, into jaggies. It is thus possible to first pinpoint exactly where a mod is needed then have the option of making the mod very local and without counter-effects further along. Tho maybe return to a nice smooth gentle curve after diagnosis stage; each pic varies
Only don't bother hunting in the manual for any detail on how to use.