It would be nice if it was released on both formats (DVD and Blu-ray) and not just being rereleased to tie in with the new Indy film. This really smacks of LFLs practice of rereleasing the Star Wars movies everytime something Star Wars is going to come out. If you want to send a real message, don't buy this. Personally, I got the boxed set when it came out a few years back. I'll rebuy it when it comes out on Blu-ray and not until then.
We can only hope they release all the movies on Blu-ray after Indy 4 has its theatrical run.