Slashdot has been crying wolf since they are a geek site and geeks seem to like that kind of thing and also like new technology, no matter the cost and issues.
However there have been actual depletions of IPv4 space of various kinds. First it was that all available networks were allocated to regional registrars. Now some of those regional registrars are allocating all their remaining addresses.
That doesn't mean doomsday, of course, it means that for any additional allocation to go on, something would have to be reclaimed. That has happened in the past, organizations have given back part of their allocations so they could be reassigned. It may lead to IPs being worth more. Company A might want some IPs and Company B could cut their usage with renumbering, NAT, etc so they'll agree to sell them.
Since IPs aren't used up in the sens of being destroyed, there'll never be some doomsday where we just "run out" but as time goes on the available space vs demand will make things more difficult. As that difficulty increases, IPv6 makes more sense and we'll see more of it.
We are already getting there in many ways. You see a lot of US ISPs preparing to roll it out, despite having large IPv4 allocations themselves, because they are seeing the need for it.