I see these questions a lot so I copied the FAQs from Run8s website for those of you who don't want to register and read them yourselves.

When is Run8 going to be released?
It is available at Run8Studios.com

How much does Run 8 cost?

$40.00 (USD)

Can I use PayPal to purchase Run8?
No. We will be accepting VISA and MasterCard credit and debit cards.

What if I don't have a credit card, can I mail you a money order?
Yes, You can mail payment to our address listed on the ContactUs page at http://www.3DTrainStuff.com and make sure to include a valid email address so we can send you a link to download the product.

Will I be able to buy it at a store?
No. We will be offering it as a download only.

Will I have to register Run8 in order to use it?
Yes, you must register it in order to use it.

How do I register Run8 when I get it?
You will need to keep your reciept as you will have to enter your transaction ID # listed on that receipt into the Run8 registration field of the InSim Options Other Tab.

Will I be able to use my ThatOtherSim stuff in Run 8 Train Simulator?
No. Run8 is a completely new train simulator program.

Will this release of Run8 come with editors and tools?
Not with this release as we are still working on them. We hope to have an SDK out in about 12 months, we really want to put something nice together for developers that want to create content for Run8.

Are there plans to complete all, or at least most of the non-railroad scenery along the route?
Yes, the route definitely needs more assets, and we will put them in as we get them and then put an update out for everyone periodically.

Can I put Run8 on more than one computer?
Yes, but you will only be able to use it on one computer at a time.

Will my RailDriver work with Run8?
Yes. We have full RD support and works very well with Run8.

How powerful does my computer need to be?
These are the minimum computer specs we recommend:

CPU: AMD Athlon 64 X2 Dual Core 5600+ 2.80 GHz
RAM: 3.21 Gb RAM (run8 will only use around 2 max due to DotNet memory management stuff)
Video Card: GeForce GT440 1Gb VRAM

Do I have to be online to use Run 8?
No. You will only need internet to use the program in multiplayer sessions.