Does any school seriously believe Maitreya might appear in my lifetime Say, the next 30 years?

The world is going to undergo great turmoil IMO, as technology outstrips not just need but the reality we live in.

Is there much or indeed any chance that Maitreya will appear to help humanity through these changes?
Well, things have to get really really bad and then it'll have to get really really good in order for Metteyya Buddha to appear:

&quot;And the sons of these sons will come to live eighty years; their sons to 160 years; their sons to 320 years; their sons to 640 years; their sons to 2,000 years; their sons to 4,000 years; their sons to 8,000 years; their sons to 20,000 years; their sons to 40,000 years; and the sons of those that lived 40,000 years will come to live 80,000 years.
Among humans living 80,000 years, brethren, maidens are marriageable at 500 years of age.
Among such humans there will be only three kinds of disease—appetite, non-assimilation and old age.&quot;
At that period, brethren, there will arise in the world an Exalted One named Metteyya, Arahant, Fully Awakened, abounding in wisdom and goodness, happy, with knowledge of the worlds, unsurpassed as a guide to mortals willing to be led, a teacher for gods and men, an, Exalted One, a Buddha, even as I am now. ~ DN 26 ~