Hello,
In my spare time I play the piano and write music. Upon giving me a very generous Christmas bonus, My boss kindly reminded me it was time I'd give a concert for my fellow workers. We've got a generously-sized conference hall (~500 sq. m.) which has a nice surround sound reproducing system. An acoustic Stainway grand would fit in perfectly

but we have to go with something slighly more compact.
My original idea was to get a Yamaha p105 but after playing it in a store I didn't like it. Here I'd like to mention I play an acoustic upriht Petroff at home whose keys are heavy and it's sound is gorgeous. While I didn't mind the p105 action, it's sound was far too light and distorted. I test drived it both with its own speakers and headphones. Would recommend this piano only to true beginners.
Next, I tried out the CP-50, which sat next to it. A much better product (and it should be so, at more than double the price) but it still left something to be desired soundwise.
Lastly, I tried out the CLP-440. I used to own it's predecessor, the 340 and developed strong hate against it, because the GH-3 ivory keytops, despite it's nice feel to the fingers, was giving me troubles and my wrists ached after playing it for more than 1 hour. Perhaps my unit was faulty? I don't know. Compared to the 440 it's like heck and heaven. The action is quick and responsive, heavy enough, and there is a good connection between the keyboard, pedals and speakers, it sounds and feels like a high quality instrument. The fact that it has a USB audio recorder is a strong plus because I will use it to record my own compositions.
So, this topic is not about asking for a recommendation as to which piano I should get. The brand is Yamaha, the model is CLP-440. My question is how far we are into the CLP-400 series product life cycle and when are they expected to be replaced? I'd describe the difference between the CLP-300 and CLP-400 as 'drastical'. Have you got any idea what the CLP-500 will bring to the table and when? If the 500 are expected to be released later this year I might postpone the purchase.