Microsoft last week repeated its assertion that future Windows 10 feature upgrades will shrink in size later this year, and supported the claim with a smattering of data.
Those running Windows 10’s preview, labeled “Insider,” will see the largest reductions in download size, the data showed.
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Windows 10’s new update delivery system reduces the size of downloads — in this case by 65% for an Insider refresh (in green) — compared to a full-install “canonical” update (in blue), by sending only what has changed since the last update.
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Source: News Feed