No. The angels did not have from the beginning of their creation that ultimate beatitude which is beyond the power of nature because such beatitude is no part of their nature, but its end; and consequently they ought not to have it immediately from the beginning.
To be established or confirmed in good is of the nature of beatitude. But the angels were not confirmed in good as soon as they were created; the fall of some of them shows this. Therefore the angels were not in beatitude from their creation.
Now there is a twofold ultimate perfection of rational or of intellectual nature. The first is one which it can procure of its own natural power; and this is in a measure called beatitude or happiness. Hence Aristotle (Ethic. x) says that man's ultimate happiness consists in his most perfect contemplation, whereby in this life he can behold the best intelligible object; and that is God. Above this happiness there is still another, which we look forward to in the future, whereby "we shall see God as He is." This is beyond the nature of every created intellect, as was shown above (Q12, A4).
So, then, it remains to be said, that, as regards this first beatitude, which the angel could procure by his natural power, he was created already blessed. Because the angel does not acquire such beatitude by any progressive action, as man does, but, as was observed above (Q58, AA3-4), is straightway in possession thereof, owing to his natural dignity.