  4U 1626-67 is an accretion powered X-ray pulsar that shows remarkably stable
X-ray luminosity above hours timescale and gradual intensity variation on a few
years timescale. Here we report a significant increase in the X-ray intensity
in the long term RXTE-ASM light curve of 4U 1626-67. Similar enhancement in the
X-ray flux has also been detected in the Swift-BAT light curve. The increase in
the X-ray flux took place over a long period of about 100 days and there
appears to be two episodes of flux enhancement. We have investigated the
spectral and timing features of 4U 1626-67 during its current state of enhanced
flux emission with data obtained from the Proportional Counter Array and the
High-Energy X-ray Timing Explorer on board the Rossi X-ray Timing Explorer. The
source has entered a new spin-up phase with a spin-up rate of 4.02(5) $\times$
10$^{-13}$ Hz s$^{-1}$. The present spin-up rate is almost half of the earlier
spin-up and spin-down trends. A significant excess in soft X-ray photon
emission is observed during the enhanced flux state, which is similar to the
energy spectrum obtained during the spin-up era of the pulsar before 1990. We
also report detection of a significant broadening in the wings of the 130 mHz
peak and a change in the shape of the continuum of the power spectrum.
