Perl 5.30 just came out in May. So it is still actively being maintained and improved.
Perl 5 is included by default in most Linux distros and there are Perl distributions available for all major operating systems and platforms. (See http://www.cpan.org/ports/index.html for the comprehensive list.)
Obsolete != Trendy / popular
Perl 6 was a bit slow to start and has not seen wide adoption. With Python, Ruby, and now even Powershell as scripting competitors, people have more options and aren't choosing it as much.
Perl 5 was an easy choice when it was practically a standard part of LAMP stacks via mod_perl in the Apache web server. Now there are so many backend web server choices you can pretty much use any major programming language.
I don't think Perl 6 will displace Perl 5. Perl 5 may even out last Perl 6.