grizz (#492), releasing such a statement is not unusual. Protocol requires that the investigating authority makes the statement; the manufacturer is a participant in the process, although usually requests such info to placate airworthiness authorities and operators / prospective operators at the earliest and most appropriate time.
The CVR is quite capable of determining ‘at this time’ that there were ‘no indications of …’ (details may have been lost in translation). E.g. no systems alerts or warnings heard, no crew calls for emergency procedures, and no unusual/unexpected noises.