I have revised Meta tags for my website being 15 days before.. But it still showing Old tags in google while checking keyword rankings.
Get More backlinks to crawl and also submit new sitemap.xml in Google webmaster tools, this will geive benefit to your site for crawling....
It could take 3 or 4 weeks to crawl and re-index your page. While you're waiting concentrate on getting quality backlinks and start a strategy of updating your pages more often. This will encourage Google to revisit your site more often.
It can definitely take a while. But the advice about updating your site more often is good advice - also helps your SERPs.
Give it a week or too more and your new tags will be there. The time to update all depends on how big your site is and how often Google crawls the site. If you update the site more often, Google will visit more often.
as others have said depending on how big your site is, will depend on how much your site is crawled, so it could take from a number of days to a number of weeks, just concentrate on building your website and im sure big g will make thhe changes in time.
ping google, and it will send spiders to your site as soon as possible and you can see new meta data within 2 days
Be patient... Google will update it in it's next crawl. You can submit a sitemap to Google Webmaster tools to quick up the process.
It may take up to a month to reindex your page with revised tags. It happened with me and it took about 3 weeks for me.