What's the difference between these "Blue Note Tone Poet Series" and the reissues that were done back in 2008, (45rpm by Music Matters and Analogue Productions)?
I don't think there's a great deal of difference, other than all the Tone Poets I'm aware of are 33.3 rpm (yay). And they generally don't touch the titles released by Music Matters, who also employed an advanced vinyl formulation (SRX) on a limited amount of titles near the end of their run.
I can't speak to all the MM albums, but I believe they were pressed at RTI, as is the TP series. Joe Harley (the Tone Poet) was part of the Music Matters team and is supervising the TP series.
Kevin Gray masters the TP, and did master at least some of the MM. One difference is that at one time Gray's mastering facility was Acous-Tech, which closed in 2010. Gray then opened Cohearent (with updated equipment and better results according to Michael Fremer), and works there today.
Analogue Productions presses at QRP, which I believe they own. They also utilize Kevin Gray @ Cohearent. Also Steve Hoffman was mastering some of the earlier titles.
They all have the premium jackets and artwork. I have a couple MM, some more recent Miles Davis reissues from AP, and several TP releases. For my purposes, the TP series is a smokin' deal (using pre-order) in comparison to the other series.
Blue Note itself (and other labels) are part of the Universal Music Group (UMG). New these days are the Acoustic Sounds series who are releasing titles from other UMG labels like Verve, Gramercy, etc. This has given us the recent Getz/Gilberto which I have, its pressed at QRP and mastered from the analogue tapes by George Marino at Sterling Sound.
I know there's been quality remasters done over the years by different labels (ORG, etc) but I think Music Matters showed that it was quite possible to specialize ( and monetize ) the catalogue which has driven the interest to continue with Tone Poets, and the Acoustic Sounds series.
These latter two aren't as exclusive as Music Matters was, which is a good thing in terms of price and availability.