I asked about "Tarzan" S2 today and they say it's getting close. I at least shouldn't have to worry it won't be out before the end of the year so once that comes that will cross off one of the Top 5 titles I hoped to have completed when the program was first announced ("Girl From UNCLE" being another; "The FBI" will eventually be #3).
The music clearance issues are unfortunately going to bedevil *every* Warner produced title (by which I mean originally produced by Warners) between 1957 and 1963. According to a book on TV music by Jon Burlingame, one of the foremost experts in the field, Warner switched exclusively to tracked music for all their TV programs starting in 1957 (after having original scored done the previous two years) and didn't end this until 1963. Thus, every title has issues with multiple music libraries in addition to songs which explains the absence of all the Warner detective and western shows of this era save for "Cheyenne" (which got its headstart on all other titles thanks to its first two seasons having no tracked issues) and "Maverick" from WHV. I know I'm fortunate in that "Maverick" is really the only Warner produced title of this era I had a high priority interest in, but I hope eventually they do get these matters straightened out so that I might decide to sample these other programs when they become available.
For MGM produced programs, I do hope we'll see S2 of Kildare soon. Meantime, I'm tiding myself over by finally getting through the episodes of "The Lieutenant" that I haven't watched.