What other bands have notable anniversaries this year?

[FuzzyPlum]

I was just reading The KLF have given a cryptic message they may be active this year (as a celebration of their conception back in 1987). I remember KLF having a string of hit singles in my youth ending with their last (and best) hit 'Justified and Ancient' featuring Tammy Wynette way back in 1991. If they reformed this year it would be a really big thing for me... good memories of those times.

With Fleetwood Mac likely to be active this year, coinciding with their golden jubilee, I was wondering what other notable bands (in any form) would celebrate major milestones this year and what the likelihood would be that they'd tour or release music in some form.

Green= Very likely/certain, Amber= Possible, Red= Highly unlikely/no chance

50 years;
Blue Oyster Cult (A), Chicago (R), Creedance Clearwater Revival (R), Fairport Convention (A), Genesis (A), Jethro Tull (R), Procol Harem G), REO Speedwagon (G), Sly & the Family Stone (R)

40 years;
The Fall (A), Human League (A), The Police (R), Adam & the Ants (R), Def Leppard (G), Dire Straits (R), Simple Minds (G), INXS (R), Toto (G), Thompson Twins (R)

30 years;
Ace of Bass (A), Gin Blossoms (G), KLF (A), Ugly Kid Joe (A)

20 years;
Destiny's Child (R), Elbow (G), Kaiser Chiefs (G), Kasabian (G), Keane A), White Stripes R)


Of all the bands that could tour/release albums/reform Fleetwood Mac would undoubtedly be the biggest though I suppose (though highly unlikely) CCW, S&TFS or The Police would be the most headline grabbing if they did.