The ‘Tables and Records feeds,’ are the two new Spreadsheets APIs released at Google I/O, that provide a structured record-based table for storing and updating tabular data in a spreadsheet. Tables can be placed anywhere on the sheet, with multiple tables per sheet and column-based meta-data for each column in the table. The Records feed is a feed of rows within a table, which we are calling records, with stable IDs (moving the rows around will maintain the same row ID).

More info: Tables and Records feeds | Demo | Tutorial