Yes. However, your real world performance, even with a drive far worse than an OCZ or X-25, will be massively improved over rotational media either way - waiting for newer drives will give you more improvement, but it's hard to envision what you're doing on your laptop to make that worthwhile (especially for the dollars those drives will cost). Even without NCQ, on average workloads the removal of drive head seek time will make more difference to you than anything else. If you're doing heavy bulk sequential writes, then maybe you want to stick with rotating media, but otherwise an SSD, even on SATA 2, will be a very significant improvement. Waiting for technology improvement is a fools' errand - there will always be something better coming down the pipe, and you'll wait forever if that is your bar.
(No current SSD can max out SATA2 read speed in sustained transfer, let alone their abysmal write speeds - newer drives will still perform better, albeit possibly not at their theoretical maximum, with your existing interface).