New life for the shoot'em ups?

Noticed?
After years of complete absence in the last months more than a big name in the mobile games industry developed and published some new titles of that old but fascinating genre named shoot'em up.
Ok I'm 37, so I played the original version of Galaga and Space Invaders and I admit I can't resist the call of a good shoot'em up.
The question is: why now, after years of silence, more than a publisher revamped such a genre?
Evolution? Involution? Perhaps who presses the button (industry, not joypads...) is just like me 37 and wants to correct this error?
Anyway, wathever is the reason... thank you for this second chance!

Welcome Mobile Games Industry Veterans!

This the blog for all of the mobile gaming industry veterans. Everyone has or have had a role for years in this industry is welcome!
Experience is a must and our strength.
Let's share thoughts, visions and ideas. We contributed to create this industry, we shall continue to influence this market understanding where we're going right now and where we should go in the future.

The source for news, previews, impressions, visions will be, I hope, the Linkedin Group http://www.linkedin.com/e/gis/123592/62C6FD363256 consisting actually in more than 200 years of mobile games industry experience (and counting).