Bound to be some overlap - but a LOT of rare material across the 2 CDs. Yes, the 16 tracks from the W Music CD are here, but they are not the BBC Master Tapes (obviously) they are dubbed from 'Off - Air' recordings / old BBC Transcription Discs (in surprisingly good quality). There are 23 tracks* for which no Master Tapes exist. (* I meant to say 20). 10 of those were on extremely difficult to find (& long - deleted) 'Collectors' CDs'. 10 tracks (thought to be lost forever) have never been heard since they were broadcast back in the 1960s.
I doubt that the M, W & F material will be released as those tracks are still in copyright. Fans could ask Warner Music to issue the M, W & F material but, quite frankly, I do not think that they would consider it worth their while to do so.