It was "are likely to be deleted" before, but this might not have been strong enough. There is a lot of junk on New pages. Aside from the time spent by the creator who takes the time to write the page because he wants his favorite band on Wikipedia or whatnot, and who then complains about its deletion because he misunderstands what Wikipedia is, it is a tremendous amount of time wasted just deleting them all. This is first, therefore, a discouragement against creating bad articles.
It is also an accurate description of what happens. Most new articles without reliable published sources are deleted, typically for notability reasons. Articles that look promising need sources added to them, but articles which cannot possibly cite reliable published sources, for they do not exist, are deleted.
There is a proposal to speedily delete new unsourced articles, at < http://en.wikipedia.org/wiki/Wikipedia:Speedy_deletion_criterion_for_unsourc.... This would be too categorical, but it comes from looking at the onslaught of complete crap that floods new pages, especially on peak hours, in which it is difficult to distinguish whether an article is actually about a verifiable band or person or whether it is an article about the coolest band ever.
A better solution is to advise users against creating junk in the first place. Anyone who wants to create an article has or can easily find some sources to substantiate it, and it is not too onerous to ask that they simply provide them, or to re-consider whether there exist any sources for making an encyclopedia article at all.