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_unsour…gt;.
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.