Yes, but it does not say that his commitments to Dream Theater are "the reason." What it says is, "Unfortunately in this case, James LaBrie’s responsibilities to Dream Theater and his bandmates are of the utmost importance, and this will be a critical period of writing in studio for the next Dream Theater record." To me, the incredibly vague wording (by the promoter--not a spokesman of the band, I might add) suggests that the reason is either unknown or cannot be disclosed, and the person who drafted the statement was just scrambling for something to say. But in any case, read the statement carefully. Note that it does not say what the reason for the cancellation actually is.