Late 2016-Early 2017: personal projects (from BL to PGA. Go, Dave!)
Late 2017: 2nd leg of TBoS
2018: New Album and Tour
I think Harry said he wants to tour with BL. Recording an BL album it's a 1-2 month work, at max. But a tour would demand more than a couple of months. If he tours with BL, i don't think Maiden will reunite before late 2017, and a new album wouldn't go to the oven before 2018. If Bruce's going solo as well, he'll want at least one semester to work and tour with his material (and we had proof that he can't handle 12 months of straight singing anymore).
He never toured for Tyranny of Souls as far as I know because Maiden is his main band now.
His Airraid Over Europe tour in 2002 seemed to work well. He did some festivals in Europe like Wacken and Sweden Rock, combined with own shows in South America, from June to early August. But Maiden had only done only three gigs in 18 months at the time.
The Classic Wrathchild Tour
Wrathchild
Wrathchild extended
Wrathchild without the screaming
Wrathchild with Harry's vocals
Wrathchild with Gers on the backing vocals
Wrathchild commented by Harry
Wrathchild: a re-release by Dave Murray
Wrathchild with DiAnno on Skype
Wrathchild with Bruce on the drums
Fear of the Dark
Iron Maiden
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Wrathchild instrumental
Wrathchild
Not completely. He and Adrian did 5 dates in Brazil during April 1999, and recorded a live album, "Scream For Me Brazil" as well.I thought his solo touring definitively ended when he re-joined Maiden.