# clm_CA7BE0ADFECB

subject: Microsoft (/record/microsoft.md)  
predicate: released  
value: Surface Book 2  
valid_from: 2017-11-17  
valid_to: null  
published: no source on record carries a date  
recorded: 2026-10-30  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-10-31  
cite: AsOf. "Microsoft released: Surface Book 2", as of 2017-11-17. Claim clm_CA7BE0ADFECB, https://asof.is/claim/clm_CA7BE0ADFECB, accessed 2026-11-08. Source: https://learn.microsoft.com/en-us/surface/surface-driver-firmware-lifecycle-support.  
checked: 2026-10-30 · its source page states the value and the date  

> Surface Book 2 November 17, 2017 June 30, 2023

What https://learn.microsoft.com/en-us/surface/surface-driver-firmware-lifecycle-support says, word for word.

## Sources

- https://learn.microsoft.com/en-us/surface/surface-driver-firmware-lifecycle-support (primary)
- https://www.wikidata.org/wiki/Q42172800 (secondary, Wikidata)

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.