According to a report from Digitimes, sales of Google’s Nexus 7 tablet are on pace to surpass 1 million units for the month of December. The boost from a November estimate of 800,000 to 900,000 tablets shipped can be attributed to strong holiday sales. It also comes a month after Google revamped its Nexus 7 lineup with larger storage options and the addition of a 3G-enabled model.

Overall, from information gathered from Google and ASUS’ supply chain partners, an expected 2-4 million Nexus 7 slates will have shipped by the end of the fourth quarter of 2012. December will mark the first time Google has surpassed the 1 million monthly sales mark since the tablet launched back in July. An estimated 2-3 million units had been sold as of the end of October, putting a total year-end figure somewhere in the 4-7 million range, surpassing Google’s initial goal of 3 million.

In comparison, the same report sees Amazon moving 3-4 million Kindle Fire tablets over Q4 and Apple’s manufacturing partners have plans to ship a combined 3.5 million iPad mini slates between November and December. The uptick in tablet demand coincides with a decreased number of notebook shipments.