I agree with TFTCentral's sentiments. I don't believe we will ever see 22" non-TN panels. Many new panels that are coming out, regardless of size, will be TN. Specifically you will see many more TN+wide gamut panels to replace the VAs and IPS panels. There will be a few more P-MVAs (and will continue to be for sizes 24" and over, but especially 27" and over). It's likely that no S-IPS desktop monitors under $1200 will be released within the next year. It seems like S-IPS is at the last stage of death right now. This is how I see it happening:
Present (Jul 12):
limited S-IPS availability, VA displays <24" stagnating, TN displays constantly on the rise
...+1 year
very few/expensive S-IPS displays, only two to three new VA panel modules, TN+wide gamut panels rampant. More, expensive (up to $2000) LED-backlight LCDs out.
...+1.5 yrs
affordable LED-backlight LCDs start to appear
...+2 years
very few/expensive S-IPS displays, many new VAs: healthy market for big VAs with 120hz/etc, TN+wide gamut panels
...+3 years
-new tech such as field-sequential, color filter-less LCD for lower response time (still has problems at this point)
-maybe FED, SED prototypes, or perhaps the first OLEDs will appear
Practically all LCD module manufacturers are planning to or are producing wide gamut TN panels at this point. Like you see on the Starbucks cups, that's just "the way I see it."