First time mac buyer. If it isn't released?

Alright everyone i've had my eye on the iMac for a little while now because it seems like a great tool for me as a photographer. I was just about to buy a 27in refurb model the other day but decided to see if there was any news about a newer version coming out. I ended up here and obviously everything is buzzing about this new iMac today. Well i don't care so much about retina as the current screen is beautiful.

I'm just wondering if it isn't released this week(yes I said it) would I still be good to go getting the older refurbished model. I want this to last me as long as possible and that's why i'm asking since it's already on older technology now. Thanks everyone.