In a recent interview with the Waterloo Record, it is stated that Chen is flying to Indonesia next week for the official launch of the Z3. Whether next week is referring to the week of April 7th or the week of April 14th isn't exactly clear. Overall, it's a well written article and definitely worth a read.
Quote about the Z3:
Next week, Chen flies to Indonesia for the official launch of the Jakarta Z3 — the new large touch-screen smartphone BlackBerry produced in partnership with Taiwan-based Foxconn for the Indonesian market.
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That's the approach BlackBerry is taking with the Jakarta Z3 and its partnership with Foxconn. Foxconn used existing technology and built a new phone priced for less than $200 for emerging markets. After its release in Indonesia next week, the phone will be rolled out later this year in Thailand and India.
Chen travelling the world to promote BlackBerry