Other than the new look and format for the Retromags 2.0, I'm not sure if there is going to be any difference in terms of the number of magazines that will available at the time of launch. Phillyman has stated that 800-900 magazines will be available at the time of launch. Currently there are 947 magazins available in the Magazines Download section.
Unless there are going to be a lot more new magazines available, more than the 947 currently available, personally I don't think it really matters whether Retromags 2.0 launches now or in 6 months. The 1999 rule hasn't changed either from my understand. So you're basically going to get the same number of magazines that are already currrently available on the site.
If you haven't signed up for a Newshosting account, I highly recommend it. They have a 14-day free trial period. The downloads are extrememly fast. I downloaded all the GamePro, EGM and Game Players magazines in less than an hour. The I cancelled my account. I didn't have to pay a penny in the end. You could download all 947 magazines in probably less than 2 hours. I think 947 mags should keep you until Retromags 2.0 is launched