Unreliable accounts in all latest material (4,5)

I believe the answer is:

tall tales

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'unreliable accounts' is the definition.
'tall tales' can be an answer for 'accounts' (tall tale is a kind of account). I am unsure of the 'unreliable' bit.

'all latest material' is the wordplay.
'material' indicates anagramming the letters (the letters provide the material for a new word).
'all'+'latest'='alllatest'
'alllatest' is an anagram of 'TALL TALES'.

'in' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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