It's a bit of everything. There are more pilots required, but less available. Several experienced pilots have recently left my company to quite flying altogether. The working conditions are worse than before, they've just had enough. And I know how they feel!
I get the same e-mails - same old companies. Lots in China, where the working conditions as so poor that not even the big $ will attract the pilots - and new low cost hopefuls like small planet where the remuneration is pants.
Were now at a place where the constantly decreasing terms and conditions have made this job much less attractive and there are not enough pilots. The industry has driven this in the race for more profits and have painted themselves into a corner.