Welcome to this week’s Release Round-Up! Jimi Hendrix, Both Sides of the Sky (Legacy/Experience Hendrix) CD: Amazon U.S. / Amazon U.K. / Amazon Canada LP: Amazon U.S. / Amazon U.K. / Amazon Canada The latest collection of posthumously-released material from Jimi Hendrix arrives in CD, vinyl, and digital formats, featuring 13 songs recorded between January 1968 and February 1970 – ten of which are previously unreleased, including performances with Stephen Stills of Joni Mitchell’s “Woodstock” and the original song “$20 Fine.” Eva Cassidy, Songbird 20 (Blix Street) (Amazon U.S. / Amazon U.K. / Amazon Canada) The late Eva Cassidy’s 1998 posthumous collection…