Adobe reset their Creative Cloud trial versions so you can see what’s new and check all the latest updates even if you already had a trial in the past:
"We’ve reset our Creative Cloud trial versions so you can see what’s new. The 2015 release of Creative Cloud is here and we’ve reset the clock on our product trials, including Adobe Photoshop CC, Illustrator CC and InDesign CC. So take advantage of this opportunity to test-drive the latest features by taking free trials of your favorite apps."
The Adobe Creative Cloud 2015 pricing can be found here.