No, definitely no update in June. June is iPhone Season, and Apple would not steal the iPhone's thunder with another update. Besides, even though Apples product release cycle might be aggressive, it's not that aggressive. If the current cycle holds out, there won't be updates on the Macbook Pro until at least the holiday season, if not into 2011. And even then, my guess would be that it would be something that wouldn't affect what you're buying, something minor like maybe light speed increases on the CPUs, and maybe the 13 inchers would get updated to i5s or something. MAYBE.
And, if the turnaround on updates really were so quick that new models would come in June, and you absolutely wanted to always have the latest and greatest MBP, you'd NEVER buy because there'd always be an update right around the corner.
Just evaluate what you plan on doing with it, and see if it fits those needs. If it does, great! Go buy one and don't obsess over the future.
I bought my first Macbook in 2007, just a little over two weeks before the newer, faster Santa Rosa version came out (I was totally unaware of the product cycles at the time). It was annoying when I realized the situation I was in, but at the same time what I had was still perfectly fine for what I needed. And it continued to be fine for three more years. In fact, that MBP would still be serving me just fine if someone hadn't broken into my car a couple weeks ago and stolen it. And considering MBPs of that same vintage are fetching more than $500 bids on eBay, the thief made off pretty well, unfortunately.
At least this time, I knew a refresh was imminent and waited until it happened before I bought my replacement. And I fully expect this MBP will totally last me another 3 years, if not longer.
Bottom line: the refresh just happened. The timing is not going to get any better for buying a Macbook Pro. And even if you were at the wrong end of the cycle, it would still last you a very long time.
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