The Bank of Japan is likely to keep its bullish inflation outlook even as it cuts its economic growth forecast this fiscal year in an October report, sources said, suggesting the central bank will not ease policy further for at least the rest of the year. After a hefty 6.8 percent contraction in second-quarter gross domestic product, many private-sector analysts are downgrading their growth forecasts for the year ending in March to around 0.5 percent, just half the 1.0 percent expansion estimated by the BOJ in July.