Just had a quick look for these, got a question for David@FrankHarvey (or anyone else who can answer): the tweeters are off-set from the centre, do both speakers come with the tweeter off-set to the same side? All pictures I've seen show this, which seems nuts and would be guaranteed to drive me bonkers.
ProAc only produce mirrored pairs - you'll never see a ProAc speaker with the tweeters on the same side.
So far, dealers have only been sent an image of a single speaker, so you may see pictures where it's been doubled up to show a pair (as in our case). The current Tablette pic is a bit of a naff photoshop job, but better pics will be available shortly.
Indeed the Studio 115 speakers are truly remarkable for a stand mounter at their level - arguably a new benchmark for some of their competitors to come. We haven't received our Tablette Anniversary's yet but I'm looking forward to comparing these both to the Studio 115s and older D1s.
I've not tried this as a direct comparison, but the difference between the D1 and Tablette is a little like the difference between the D18 and D140 MkII. The D1 and D18's are the ProAc everyone is used to - sweet, detailed, slightly warm, and pretty much sounds good with everything. The Tablette and D140 (and 115's for that matter) are a little leaner with slightly less warmth, and have a more vivid presentation, with more energy compared to the slightly softer 18's and 1's. Which you prefer can be personal preference, or a choice made by your amplifier, or even both. You'll only need to compare one the combinations I've mentioned to get a pretty clear picture of the differences I'm trying to describe.
To add to that, the D1's and Tablettes are more suited to smaller rooms, and the other models to larger ones.